JPH02187712A - Method of adjusting and fixing optical fiber - Google Patents
Method of adjusting and fixing optical fiberInfo
- Publication number
- JPH02187712A JPH02187712A JP811889A JP811889A JPH02187712A JP H02187712 A JPH02187712 A JP H02187712A JP 811889 A JP811889 A JP 811889A JP 811889 A JP811889 A JP 811889A JP H02187712 A JPH02187712 A JP H02187712A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- ferrule
- housing
- fiber
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims description 12
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 230000004308 accommodation Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005476 soldering Methods 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 229910000833 kovar Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 241000270281 Coluber constrictor Species 0.000 description 1
- -1 Kohar I Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- OQZCSNDVOWYALR-UHFFFAOYSA-N flurochloridone Chemical compound FC(F)(F)C1=CC=CC(N2C(C(Cl)C(CCl)C2)=O)=C1 OQZCSNDVOWYALR-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4237—Welding
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
発光素子、受光素子等の光電変換素子と光ファイバとが
光結合されてなる光モジュールにかかわり、特に光ファ
イバの調整固定方法に関し、光結合度が安定して高く、
且つ光ファイバの固定部が経時変化することがな（て伝
送損失が安定した、光ファイバの調整固定方法を提供す
ることを目的とし、
ハウジングの収容室に実装した充電変換素子と、ハウジ
ング端面部分で該ハウジングに固定した光ファイバとが
、光結合してなる光モジュールにおいて、該収容室の開
口面と該ハウジング端面との間に、所望に深い空洞を設
け、該光ファイバの端末に装着したフェルールを、それ
ぞれの軸心孔に押通して、リング板を該フェルールの先
端部に、フランジ板を該フェルールの後端部にそれぞれ
装着し、ファイバ先端を該収容室に挿入して、ファイバ
先端の位置調整を行い、その後該リング板を収容室端面
にレーザー溶接し、次にファイバ先端位置の再調整を行
った後１、該フェルールを該フランジ板に、該フランジ
板を該ハウジング端面に、それぞれレーザー溶接して、
該光ファイバを該ハウジングに固定する構成とする。[Detailed Description of the Invention] [Summary] The present invention relates to an optical module in which a photoelectric conversion element such as a light emitting element or a light receiving element is optically coupled to an optical fiber. and high,
The purpose of this invention is to provide a method for adjusting and fixing an optical fiber in which the fixing part of the optical fiber does not change over time (and the transmission loss is stabilized). In an optical module formed by optically coupling an optical fiber fixed to the housing, a desired deep cavity is provided between the opening surface of the accommodation chamber and the end surface of the housing, and the optical fiber is attached to the end of the optical fiber. Push the ferrule through each axis hole, attach the ring plate to the tip of the ferrule and the flange plate to the rear end of the ferrule, insert the fiber tip into the accommodation chamber, and remove the fiber tip. After adjusting the position of the ring plate, then laser welding the ring plate to the end face of the housing chamber, and then readjusting the position of the fiber tip, 1, attach the ferrule to the flange plate, and the flange plate to the end face of the housing. Laser welded each
The optical fiber is fixed to the housing.
（産業上の利用分野］
本発明は、発光素子、受光素子等の光電変換素子と光フ
ァイバとが光結合されてなる光モジュールにかかわり、
特に光ファイバの調整固定方法に関する。(Industrial Application Field) The present invention relates to an optical module in which a photoelectric conversion element such as a light emitting element or a light receiving element is optically coupled to an optical fiber.
In particular, it relates to a method for adjusting and fixing optical fibers.
光通信機器においては、発光素子、受光素子等の光電変
換素子と光ファイバとを組み合わせた光モジュールが広
く使用されている。2. Description of the Related Art In optical communication equipment, optical modules that combine photoelectric conversion elements such as light emitting elements and light receiving elements with optical fibers are widely used.
この際、これらの光電変換素子と光ファイバとこの際、
ごれらの光電変換素子と光ファイバとの光結合度か高い
ごとが強く要求されＣいろ。At this time, these photoelectric conversion elements and optical fibers,
There is a strong demand for a high degree of optical coupling between the photoelectric conversion element and the optical fiber.
（従来の技術］
第２図は従来の光ファイバの調整固定方法を示す断面図
、第３図は他の従来例の調整固定力９去を示す断面図で
ある。(Prior Art) FIG. 2 is a sectional view showing a conventional optical fiber adjusting and fixing method, and FIG. 3 is a sectional view showing another conventional example of adjusting and fixing force 9.
第２図において、４は、鉄・ニッケル・コハルＩ・合金
（例えば商品名コバール）等よりなる基板部材４であっ
て、基板部材４の一端にブロックを設け、ごのブロック
に、受光面、或いは出Ｕ＝１面が垂直になるように、光
電変換素子１を実装しである。In FIG. 2, reference numeral 4 denotes a substrate member 4 made of iron, nickel, Kohar I, alloy (for example, trade name Kovar), etc. A block is provided at one end of the substrate member 4, and a light-receiving surface, Alternatively, the photoelectric conversion element 1 is mounted so that the U=1 surface is vertical.
この光電変換素子１と光結合する光ファイバ１０は、端
末部の一次被覆を剥離して光フアイバ心線１〇八を裸出
させ、光フアイバ心線１０Ａの外周面にメタライズ層１
１を形成しである。The optical fiber 10 to be optically coupled to the photoelectric conversion element 1 is prepared by peeling off the primary coating at the terminal end to expose the optical fiber core 108, and then applying a metallized layer to the outer peripheral surface of the optical fiber core 10A.
1 is formed.
また、ファイバ先端面（即ら入出射端面）から十分に離
れた位置の光ファイバ１０の外周面に、フェルール１２
を装着しである。Further, a ferrule 12 is attached to the outer peripheral surface of the optical fiber 10 at a position sufficiently away from the fiber tip surface (i.e., the input/output end surface).
It is equipped with.
光電変換素子１の光軸に平行して、基板部材４トに、光
電変換素子１乙こ近接して例えば■溝を有する金属ブロ
ック１心を設置し、さらに光電変換素子１より距離を隔
てた所望の位置に、■溝を有する他の金属ブロック１４
［３を設置しである。Parallel to the optical axis of the photoelectric conversion element 1, a metal block having, for example, a groove is installed on the substrate member 4, close to the photoelectric conversion element 1, and further spaced apart from the photoelectric conversion element 1. Another metal block 14 with a groove at a desired position.
[I installed 3.
そＵ７て、光ファ・イハＩＯを横にして、金属ブロック
１．ｌｌ’ｌの■）１１冒こメタライス層１１部分を、
金属ブロック１４Ｂの■溝にフェルール１２をそれぞれ
挿入し、ファイバ先端面を光電変換素子１＆こ近接させ
る。Then, with the optical fiber IHI IO on its side, place the metal block 1. ll'l ■) 11 The metal rice layer 11 part,
The ferrules 12 are inserted into the grooves of the metal block 14B, and the fiber tip surfaces are brought close to the photoelectric conversion element 1&.
その後、それぞれの■溝に熔融半田１３を注入し、光電
変換素子１と光ファイバ１０との光結合が最高になる如
くに、光ファ・イハ１０を位置調整し、その状態に光フ
ァイバ１０を保持して熔融半田１３を凝固させ、金属ブ
ロック１４＾、１４Ｂを介して、光ファイバ１０を基板
部材４に固定している。After that, molten solder 13 is injected into each of the grooves, the position of the optical fiber 10 is adjusted so that the optical coupling between the photoelectric conversion element 1 and the optical fiber 10 is maximized, and the optical fiber 10 is connected in that state. The optical fiber 10 is held and solidified to solidify the molten solder 13, and the optical fiber 10 is fixed to the substrate member 4 via the metal blocks 14^ and 14B.
第３図において、鉄・ニッケル・コバルト合金（例えば
商品名コバール）等の金属よりなるハウジング３には、
ハウジング端面６側が円形に開口した収容室５を設り、
収容室５の底板部分に相当するＪＪ ＋Ｆｘ部材４の中
心部に、光電変換素子１を搭載しである。In FIG. 3, the housing 3 is made of metal such as iron-nickel-cobalt alloy (for example, Kovar product name).
A housing chamber 5 having a circular opening on the housing end face 6 side is provided,
The photoelectric conversion element 1 is mounted in the center of the JJ+Fx member 4, which corresponds to the bottom plate portion of the storage chamber 5.
そして、光電変換素子Ｉの近傍の基板部材４部分に、一
対のリード端子２−Ｌ２−２をガラス封止して装着し、
それぞれのり一ト端子２−１．，２−２の先端を、光電
変換素子１の対応する電極に接続して、光電変換素子１
をハウシング＋＋ に実装し２てい／）。Then, a pair of lead terminals 2-L2-2 are sealed with glass and attached to a portion of the substrate member 4 near the photoelectric conversion element I,
Each glue terminal 2-1. , 2-2 to the corresponding electrodes of the photoelectric conversion element 1.
is implemented in the housing ++2/).
一方、光ファイバ１０の入出射端面側ば、光フアイバ心
線１０Ａを裸出させ、この部分にセラミツクス等よりな
るフェルール内筒１５＾を嵌着している。On the other hand, the optical fiber core wire 10A is exposed on the input/output end face side of the optical fiber 10, and a ferrule inner cylinder 15^ made of ceramics or the like is fitted into this part.
そして、フェルール内筒１５Ａを含めた光ファイバ１０
の端末部に、例えばステンレス鋼等よりなる円筒形のフ
ェルール１５を嵌着している。Then, the optical fiber 10 including the ferrule inner cylinder 15A
A cylindrical ferrule 15 made of, for example, stainless steel is fitted into the end portion of the ferrule.
したがって、光ファイバ１０の軸心はフェルール１５の
軸心に一致しでいる。Therefore, the axis of the optical fiber 10 coincides with the axis of the ferrule 15.
１６は、例えばステンレス鋼等よりなるフランジ板であ
って、フランジ板１６の軸心孔にフェルール１５を挿通
して、フェルール１５とフランジ板１６の軸心孔の周縁
部（図示した点１１部分）とをレザー溶接している。Reference numeral 16 denotes a flange plate made of, for example, stainless steel, and the ferrule 15 is inserted into the axial hole of the flange plate 16, and the periphery of the axial hole of the ferrule 15 and the flange plate 16 (point 11 in the figure) is inserted. and are laser welded.
フランジ板１６の端面をハウジング端面６に当接し、光
ファイバ１０の入出射端面を光電変換素子ｌの端面（受
光素子の場合は受光面、発光素子の場合は発光面）に対
向させている。The end face of the flange plate 16 is brought into contact with the housing end face 6, and the input/output end face of the optical fiber 10 is opposed to the end face of the photoelectric conversion element 1 (the light receiving surface in the case of a light receiving element, the light emitting surface in the case of a light emitting element).
この際、フランジ板Ｘ６の端面をハウジング端面６に当
接した状態で、光ファイバ１０の入出射端面が、光結合
し得る距離まで光電変換素子１の端面に近接するよう、
固着位置を設定しである。At this time, with the end surface of the flange plate X6 in contact with the housing end surface 6, the input and output end surfaces of the optical fiber 10 are brought close to the end surface of the photoelectric conversion element 1 to a distance that allows optical coupling.
Set the fixing position.
そして、フェルール１５を微動台のチー１１先端に装着
したチャックハント（いずれも図示せず）等で把持し、
微動台を操作して、光電変換素子ｌと光ファイバ１０と
の光結合度が最高になる如くに、光ファ・イハ１０をハ
ウジング端面６に平行する面内で微細に移動し、調整終
了後、レーザー光をフランジ板１６の外周部の要所要所
に照射して、点Ｐ２部分をレーザー溶接し、ハウジング
端面６に固着している。Then, grip the ferrule 15 with a chuck hunt (none of which is shown) attached to the tip of the chi 11 of the fine movement table,
By operating the fine movement table, the optical fiber 10 is minutely moved in a plane parallel to the housing end surface 6 so that the degree of optical coupling between the photoelectric conversion element 1 and the optical fiber 10 is maximized, and after the adjustment is completed, The flange plate 16 is fixed to the housing end face 6 by laser welding at point P2 by irradiating laser light onto key points on the outer periphery of the flange plate 16.
しかしながら上記従来例の前者、即ち光ファイバを半田
付けして固定する方法は、半田が経時変化してクリープ
現象が発生し、ファイバ先端面。However, in the former method of the prior art, that is, the method of fixing the optical fiber by soldering, the solder changes over time and a creep phenomenon occurs, causing damage to the fiber tip surface.
即ち入出射端面が移動する恐れがあり、光結合度の信顧
度がやや低いという問題点がある。That is, there is a possibility that the input/output end surfaces may move, and there is a problem that the degree of optical coupling is somewhat unreliable.
また、光フアイバ心線を直接半田付けしているので、環
境温度の変化により半田の熱応力が光フアイバ心線に繰
り返し附加されて、光ファイバの伝送損失が変動する恐
れがあった。Furthermore, since the optical fibers are directly soldered, there is a risk that the thermal stress of the solder will be repeatedly applied to the optical fibers due to changes in the environmental temperature, causing fluctuations in the transmission loss of the optical fibers.
後者、即ちフェルールとフランジ板、フランジ板とハウ
ジングをそれぞれレーザー溶接して固定する方法は、レ
ーザー溶接部が冷却する際に、光ファイバが溶接方向に
微小量（２μｍ〜３μＭ）引っ張られ、ファイバ先端面
、即ち入出射端面が最適位置からずれるという問題点が
あった。In the latter method, in which the ferrule and the flange plate and the flange plate and the housing are fixed by laser welding, when the laser welded part cools, the optical fiber is pulled by a minute amount (2 μm to 3 μM) in the welding direction, and the fiber tip is There was a problem in that the surfaces, that is, the entrance and exit end surfaces were deviated from the optimum position.
本発明はこのような点に鑑みて創作されたもので、光結
合度が安定して高く、且つ光ファイバの固定部が経時変
化することがなくて伝送損失が安定した、光ファイバの
調整固定方法を提供するご゛とを目的としている。The present invention was created in view of these points, and is an optical fiber adjusting and fixing device that has a stable and high degree of optical coupling, and also has stable transmission loss because the fixing part of the optical fiber does not change over time. It is intended for those who provide methods.
−１−記の目的を達成するために本発明は、第１図に例
示したように、ハウジング３の収容室５に実装した光電
変換素子１と、ハウジング端面６部分でハウジング３に
固定した光ファイバ１０とが、光結合してなる光モジュ
ールにおいて、収容室５のｌ）旧］面とハウジング端面
６との間に、所望に深い（第１図に示すほぼＣ２の長さ
）空洞８を設けたハウジング３とする。In order to achieve the object stated in -1-, the present invention, as illustrated in FIG. In the optical module optically coupled with the fiber 10, a cavity 8 with a desired depth (approximately the length of C2 shown in FIG. A housing 3 is provided.
一方、光ファイバ１０の端末にフェルール１５を装着し
、フェルール１５をそれぞれの軸心孔に挿通して、リン
グ板２０をフェルール１５の先端部に、フランジ板２１
をフェルール１５の後端部に、それぞれ装着する。On the other hand, the ferrule 15 is attached to the end of the optical fiber 10, the ferrule 15 is inserted into each axial hole, the ring plate 20 is attached to the tip of the ferrule 15, and the flange plate 21 is attached to the tip of the ferrule 15.
are attached to the rear ends of the ferrules 15, respectively.
そして、ファイバ先端を収容室５に挿入しフェルール１
５を把持操作して、ファイバ先端の位置を所望に調整し
た後に、リング板２０の外周部を収容室端面７にレーザ
ー溶接する。Then, insert the fiber tip into the accommodation chamber 5 and ferrule 1.
5 to adjust the position of the fiber tip as desired, the outer peripheral portion of the ring plate 20 is laser welded to the end surface 7 of the storage chamber.
次にフェルール１５を操作して再度ファイバ先端を微小
に位置調整した後に、フェルール１５をフランジ板２１
に、フランジ板２１の外周部をノ＼ウジング端面６に、
それぞれレーザー溶接して光ファイノ＼１０をハウジン
グ３に固定するものとする。Next, after operating the ferrule 15 and finely adjusting the position of the fiber tip again, the ferrule 15 is moved to the flange plate 21.
Then, attach the outer peripheral part of the flange plate 21 to the nozzing end face 6,
It is assumed that the optical fiber \10 is fixed to the housing 3 by laser welding.
第１図に示したように、本発明にかかわるハウジング３
は、ファイバ先☆：１１面と収容室端面７との距離ｅ１
が、収容室端面７とフランジ板２１との距離！２よりも
十分に小さい。As shown in FIG. 1, the housing 3 according to the present invention
is the distance e1 between the fiber tip ☆:11 surface and the end surface 7 of the accommodation chamber.
is the distance between the end face 7 of the storage chamber and the flange plate 21! Sufficiently smaller than 2.
いま、ファイバ先端位置を調整し、フ、ηルール１５を
リング板２０に、リング板２０を収容室端面７にそれぞ
れレーザー溶接して固定すると、設定した調整位置から
、溶接歪に起因してファイバ先端が多少ずれる。Now, when the fiber tip position is adjusted and fixed by laser welding the η rule 15 to the ring plate 20 and the ring plate 20 to the end face 7 of the accommodation chamber, the fiber will move from the set adjustment position due to welding distortion. The tip is slightly shifted.
このため、次にフェルール１５の後端部を操作して、フ
ァイバ先端を微小に動かし再調整を実施し、その後フェ
ルール１５の後端部をフランジ板２１に、フランジ板２
１をハウジング端面６に、それぞれレーザー溶接して固
定している。Therefore, next, operate the rear end of the ferrule 15 to slightly move the fiber tip and readjust it, and then attach the rear end of the ferrule 15 to the flange plate 21.
1 are fixed to the housing end face 6 by laser welding, respectively.
このフランジ板２１部分をレーリ′−熔接することに起
因して、再調整後においても、光ファイバ１０はフラン
ジ板２１の軸心孔部分か、熔接歪に起因して多少（２μ
ｍ〜３μｍ）すれる。Due to the Rayleigh welding of this flange plate 21 portion, even after readjustment, the optical fiber 10 may be attached to the axial hole portion of the flange plate 21 to some extent (2μ
m to 3 μm).
しかし、このフランジ板２１部分の熔接歪は、フェルー
ル１５かリング板２００輔心孔を支点と−４る梃子状の
運動を行う結果、フランジ板２１部分のすれ平に較べて
、ファイバ先端位置のずれが非常に小さい。However, this welding strain in the flange plate 21 is caused by a lever-like movement using the ferrule 15 or the ring plate 200 center hole as a fulcrum, and the fiber tip position is The deviation is very small.
即ら、光ファイバ１０の先端部を先にレーザー溶接し、
再調整後に光ファ・イハ１０の後部をレーナ熔接するご
とにより、熔接歪の影響を極力小さくすることができ、
ファイバ先端面が再調整位置から殆どずれることがなく
て、光結合度か高い。That is, the tip of the optical fiber 10 is first laser welded,
By welding the rear part of the optical fiber IHA 10 after readjustment, the influence of welding distortion can be minimized,
The fiber tip surface hardly deviates from the readjustment position, and the degree of optical coupling is high.
また、レーザー溶接しているので、半田付けと異なり経
時変化する恐れかなくて、光結合度が安定している。Additionally, since laser welding is used, unlike soldering, there is no risk of deterioration over time, and the degree of optical coupling is stable.
さらにフェルールを介して光ファイバを保持固定してい
るので、環境温度が変化し′ζも光ファイバに局部的の
応力が附加される恐れがなくて、光ファイバの伝送（Ｄ
失が安定し７て小さい。Furthermore, since the optical fiber is held and fixed through the ferrule, there is no risk of local stress being added to the optical fiber even if the environmental temperature changes.
The loss is stable and small at 7.
〔実施例］
以下図を参照しながら、本発明を具体的に説明する。な
お、企図を通して同一・？１号し」同 対象物を示す。[Example] The present invention will be specifically described below with reference to the drawings. In addition, is it the same throughout the plan? 1" indicates the object.
第１図は本発明方法の実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the method of the present invention.
第１図において、鉄・ニッケル・ｍｌハルト合金（例え
ば商品名コバール）等の金属よりなるハウジング３には
、ハウジング端面６側が円形に開Ｌ］した収容室５を設
け、収容室５の底板部分に相当する基板部材４の中心部
に、光電変模索−ｒ１を搭載し、光電変換素子１のそれ
ぞれの電極を、基板部材４にガラス封止して装着した一
対のり一ト端子２−１ 、２−２に接続して、収容室５
内に収容実装しである。In FIG. 1, a housing 3 made of metal such as iron, nickel, and ML Hult alloy (for example, Kovar) is provided with a housing chamber 5 that is circularly opened on the housing end surface 6 side, and a bottom plate portion of the housing chamber 5 is provided. A pair of glued terminals 2-1, each of which has a photoelectric converter grope-r1 mounted on the center of a substrate member 4 corresponding to the substrate member 4, and each electrode of the photoelectric conversion element 1 is attached to the substrate member 4 in a glass-sealed manner; Connect to 2-2 and store room 5.
It is housed and implemented inside.
また、ハうジング３には、収容室５の開し１面即ち収容
室端面７とハウジング端面６との間に、収容室５の深さ
よりも十分に深い（はぼｒ２の長さ）空洞８を設けであ
る。In addition, the housing 3 has a cavity that is sufficiently deeper than the depth of the housing chamber 5 (length r2) between the opening side of the housing chamber 5, that is, between the housing chamber end surface 7 and the housing end surface 6. 8 is provided.
一方、光ファイバ１０の入出射端面倒は、光ファ冊
イハ心線を裸出させ、ごの部分にセラミンクス等よりな
るフ、ルール内筒１５Ａを嵌着し、フェルル内ｉ：ｃＩ
Ｉ５Ａを含めた光ソー／イム１０の端末部に、空洞８（
の深さ、しりも１分に長い、円筒形のフェルール１５を
嵌着し７ている。On the other hand, in order to take care of the input and output ends of the optical fiber 10, the optical fiber core wire is exposed, and a ferrule inner cylinder 15A made of ceramics or the like is fitted in the ferrule inner tube 15A.
A cavity 8 (
A cylindrical ferrule 15 with a depth of 1 minute and a tail length of 1 minute is fitted into the ferrule 7.
２０は、例えはスう一ンレス釦１等よりなるリング板で
あっ−ζ、その外径は収容室５の内径よりも」分に太き
い。Reference numeral 20 denotes a ring plate consisting of, for example, a single-seat button 1, etc., and its outer diameter is larger than the inner diameter of the storage chamber 5.
リング板２０の中心部に、フェルール１５がしっくりと
挿入される内径寸法の貫通孔を設けである。A through hole having an inner diameter into which the ferrule 15 is snugly inserted is provided in the center of the ring plate 20.
このリング板２００軸心孔は、頂角か大きいテーパー孔
にして、フェルール１５とリング板２０とが軸心孔部分
て線接触ずろようにしである。The axial hole of this ring plate 200 is a tapered hole with a large apex angle, so that the ferrule 15 and the ring plate 20 are in linear contact with each other at the axial hole portion.
２１は、例えばステンレス鋼等よりなるフランジ板であ
って、その外径は空洞８の内径よりも十分に大きく、空
洞８の開口面に密着して固着された状態で、光７Ｈ変換
素子１等を↑、１止するようになっている。Reference numeral 21 denotes a flange plate made of, for example, stainless steel, the outer diameter of which is sufficiently larger than the inner diameter of the cavity 8, and the optical 7H conversion element 1 etc. ↑, 1 stop.
また、フランジ板２１の中心部には、ツボ刃し−ル１５
かしっくりと挿入される内径の貫通孔を設けである。In addition, in the center of the flange plate 21, a pot blade 15 is provided.
It has a through hole with an inner diameter that allows it to be inserted snugly.
上述のように構成したハウジング３．フェルール１５．
リング板２０．フランジ板２Ｉを用い、下記のようにし
て光電変模索７−１と光ファイバ１０とを光結合させる
ものとする。Housing configured as described above3. Ferrule 15.
Ring plate 20. It is assumed that the photoelectric converter 7-1 and the optical fiber 10 are optically coupled using the flange plate 2I in the following manner.
フェルール１５をフランジ板２１の軸心孔、リンク板２
０の軸心孔に挿通して、フランジ板２１をフェルール１
５の後端部に、リング板２０をソア」レーハ月５の先端
部に、それぞれ位置させる。The ferrule 15 is inserted into the axial hole of the flange plate 21 and the link plate 2.
0, and insert the flange plate 21 into the ferrule 1.
A ring plate 20 is positioned at the rear end of the soar ring 5 and at the tip of the soar ring 5.
そして、光ファイバ１０の先端部を収容室５内に差し込
み、フェルール１５の後端部を微動台のアム先端に装着
したチャンクハント２５で把持し、微動台を操作して、
ファイバ先端面を光電変換素子１の端面（受光素子の場
合は受光面、発光素子の場合は発光面）に近接して対向
さ−１、光電変換素子１と光ファイバ１０との光結合度
か最高になる如くに、ファイバ先端面を微細に移動調整
ずろ。Then, insert the tip of the optical fiber 10 into the storage chamber 5, grip the rear end of the ferrule 15 with the chunk hunt 25 attached to the tip of the fine movement table, and operate the fine movement table.
The fiber tip face is closely opposed to the end face of the photoelectric conversion element 1 (the light receiving surface in the case of a light receiving element, the light emitting surface in the case of a light emitting element), and the degree of optical coupling between the photoelectric conversion element 1 and the optical fiber 10 is -1. Finely move and adjust the fiber tip surface to get the best result.
ファイバ先端面を最適（◇置に合わせた後に、レーザー
光をリング板２０の軸心孔の外周部の要所要所（点Ａ、
で示す）に照射して、フェルール１５１；３
とリング板２０とをレーザー溶接して固着する。After aligning the fiber end face with the optimum position (◇), the laser beam is directed to key points (point A,
), and the ferrule 151;3 and the ring plate 20 are fixed together by laser welding.
また、レーデ−光をリング板２０の外周部の要所要所（
点Δ２で示す）に照射して、リング板２０を収容室端面
７にレーザー溶接して固着する。In addition, the radar light is transmitted to key points on the outer periphery of the ring plate 20 (
(indicated by point Δ2), and the ring plate 20 is fixed to the end face 7 of the storage chamber by laser welding.
そし”ζ、フェルール１５の後端部を把持し操作して、
レーサー溶接により微小にずれたファイバ先端位置を、
再度調整する。Then, grasp the rear end of the ferrule 15 and operate it,
The fiber tip position, which is slightly shifted due to racer welding, is
Adjust again.
この際ファイバ先端面と収容室端面７（即らリング板２
０の位置）との距離！１は、収容室端面７とフランジ板
２１との距離ｐ、２より遥かに小さく、且゛つ、リング
板２０の軸心孔をテーパー孔にして、フェルール１５と
リング板２０とを線接触させているので、ファイバ先端
はリング板２０の軸心孔を支点として歳差運動するよう
に微小に動く。At this time, the fiber tip surface and the accommodation chamber end surface 7 (i.e., the ring plate 2
0 position)! 1, the distance p between the end face 7 of the storage chamber and the flange plate 21 is much smaller than 2, and the axial hole of the ring plate 20 is made into a tapered hole, so that the ferrule 15 and the ring plate 20 are in line contact. Therefore, the fiber tip moves minutely so as to precess around the axial hole of the ring plate 20 as a fulcrum.
即ち、リング板２０とフェルール１５、収容室端面７と
リング板２０とを、レーザー溶接し“ζあるにもかカラ
）らず、ファイバ先Φ；１１位置を再調整することがで
きる。That is, the fiber tip Φ;11 position can be readjusted without laser welding the ring plate 20 and the ferrule 15, and the accommodation chamber end face 7 and the ring plate 20.
再調整後、レーザー光をフランジ板２１の軸心孔の外周
部の要所要所（点Ｂ１て示す）に照射して、フェルール
１５とフランジ板２１とをレーザー溶接して固着する。After the readjustment, a laser beam is irradiated to key points (indicated by point B1) on the outer periphery of the axial hole of the flange plate 21, and the ferrule 15 and the flange plate 21 are fixed by laser welding.
また、レーザー光をフランジ板２１の外周部（点Ｂ２で
示す）に照射して、フランジ板２１をハウジング端面６
にレーザー溶接して固着し、空洞Ｅ３０）開口をフラン
ジ板２１て寒くものと覆る。Further, by irradiating the outer peripheral part (indicated by point B2) of the flange plate 21 with a laser beam, the flange plate 21 is moved to the housing end face 6.
The cavity E30) is fixed by laser welding, and the opening of the cavity E30) is covered with a flange plate 21.
上述のように空洞８の深さを１分に深くし、光ファイバ
１０の先端部を先にレーザー溶接し、Ｉ斥調整後に光フ
ァイバ１０の後部をレーザー溶接しているので、作用の
欄で説明したように、熔接歪の影舌が小さくて、ファイ
バ先端面が再調整位置から殆どずれることがなく光結合
度が高い。As mentioned above, the depth of the cavity 8 is increased to 1 minute, the tip of the optical fiber 10 is laser welded first, and the rear part of the optical fiber 10 is laser welded after adjusting the I-cut. As explained above, the effect of welding distortion is small, the fiber tip surface hardly deviates from the readjustment position, and the degree of optical coupling is high.
また、レーザー溶接して光ファイバ１０を固定している
ので、半田付り、ｌ固定とは異なり経時変化する恐れが
なくて、ファイバ先端がずれる恐れがなくて、光結合度
が安定している。In addition, since the optical fiber 10 is fixed by laser welding, unlike soldering or fixing, there is no risk of deterioration over time, there is no risk of the fiber tip shifting, and the degree of optical coupling is stable. .
さらにフェルールを介して光ファイバを保持固定してい
るので、環境温度が変化しても光ファイバに局部的の応
力が附加される恐れがなく−Ｃ１光ファイバの伝送損失
が安定して小さい。Furthermore, since the optical fiber is held and fixed through the ferrule, there is no risk of local stress being applied to the optical fiber even if the environmental temperature changes, and the transmission loss of the -C1 optical fiber is stable and small.
なお、リング板２０とフェルール１５とのレーザー溶接
する時期は、ファイバ先端の位置を調整した後でなくて
、予め所定の（＼）置にレーザー溶接しても良い。Note that the ring plate 20 and the ferrule 15 may be laser welded at a predetermined position (\) in advance, rather than after adjusting the position of the fiber tip.
この所定の位置とは、リング板２０の端面を収容室端面
７に当接した状態で、光ソア・イノ＼１０の入出射端面
が光電変換素子１の端面に１分に近接する位置を言う。This predetermined position refers to a position where the input/output end face of the optical soar inno\10 approaches the end face of the photoelectric conversion element 1 within 1 minute with the end face of the ring plate 20 in contact with the end face 7 of the storage chamber. .
以り説明したように本発明は、光ファイバの先端部を先
にレーザー溶接し、再調整後に光ファイバの後部をレー
ザー溶接するという調整固定方法であって、熔接歪の影
啓が小さくて光結合度が高く、またフェルールを介して
光ファイバをハウジングに固着しているので、環境温度
が変化しても光ファイバに局部的の応力が附加される恐
れがなくて、光ファイバの伝送損失が小さく安定してお
り、さらにまた固着部が経時変化することがな（で、フ
ァイバ先端がずれる恐れがなく光結合度が安定している
等、実用」二で優れた効果がある。As explained above, the present invention is an adjustment and fixing method in which the tip of an optical fiber is first laser welded, and after readjustment, the rear part of the optical fiber is laser welded. Since the degree of coupling is high and the optical fiber is fixed to the housing via the ferrule, there is no risk of localized stress being applied to the optical fiber even if the environmental temperature changes, and the transmission loss of the optical fiber is reduced. It is small and stable, and furthermore, the fixed part does not change over time (and there is no risk of the fiber tip shifting, and the degree of optical coupling is stable), so it has excellent effects in practical use.
第１図は本発明方法の実施例の断面図、第２図は従来例
の断面図、
第３図は他の従来例の断面図である。
図において、
ｌは光電変換素子、 ２−１．２−２はり一ド端了、
３はハウジング、 ４は基板部材、
５は収容室、 ６はハうジング端面、７は収容
室端面、 ８は空ｎａ＋、
１０は光ファイバ、 １５はフェルール、１’６．２
１はフランジ板、２０はリング板、２５はチャックハン
ドをそれぞれ示す。FIG. 1 is a sectional view of an embodiment of the method of the present invention, FIG. 2 is a sectional view of a conventional example, and FIG. 3 is a sectional view of another conventional example. In the figure, l is a photoelectric conversion element, 2-1.2-2 beam end end,
3 is a housing, 4 is a substrate member, 5 is a housing chamber, 6 is a housing end face, 7 is a housing chamber end face, 8 is an empty na+, 10 is an optical fiber, 15 is a ferrule, 1'6.2
1 is a flange plate, 20 is a ring plate, and 25 is a chuck hand.
Claims (1)
子（１）と、ハウジング端面（６）部分で該ハウジング
（３）に固定した光ファイバ（１０）とが、光結合して
なる光モジュールにおいて、 該収容室（５）の開口面と該ハウジング端面（６）との
間に、所望に深い空洞（８）を設け、 該光ファイバ（１０）の端末に装着したフェルール（１
５）を、それぞれの軸心孔に挿通して、リング板（２０
）を該フェルール（１５）の先端部に、フランジ板（２
１）を該フェルール（１５）の後端部にそれぞれ装着し
、 ファイバ先端を該収容室（５）に挿入して、ファイバ先
端の位置調整を行い、その後、該リング板（２０）を収
容室端面（７）にレーザー熔接し、次にファイバ先端位
置の再調整を行った後、該フェルール（１５）を該フラ
ンジ板（２１）に、該フランジ板（２１）を該ハウジン
グ端面（６）に、それぞれレーザー熔接して、該光ファ
イバ（１０）を該ハウジング（３）に固定することを特
徴とする光ファイバの調整固定方法。[Scope of Claims] A photoelectric conversion element (1) mounted in a housing chamber (5) of a housing (3), and an optical fiber (10) fixed to the housing (3) at the end face (6) of the housing, In the optical module formed by optical coupling, a desirably deep cavity (8) is provided between the opening surface of the accommodation chamber (5) and the housing end surface (6), and the optical fiber (10) is attached to the end thereof. ferrule (1
5) into each axial hole, and insert the ring plate (20
) to the tip of the ferrule (15), and attach the flange plate (2
1) to the rear ends of the ferrules (15), insert the fiber tips into the accommodation chamber (5), adjust the position of the fiber tips, and then insert the ring plate (20) into the accommodation chamber. After laser welding the end face (7) and then readjusting the fiber tip position, the ferrule (15) is attached to the flange plate (21), and the flange plate (21) is attached to the housing end face (6). A method for adjusting and fixing an optical fiber, characterized in that the optical fiber (10) is fixed to the housing (3) by laser welding, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP811889A JPH02187712A (en) | 1989-01-17 | 1989-01-17 | Method of adjusting and fixing optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP811889A JPH02187712A (en) | 1989-01-17 | 1989-01-17 | Method of adjusting and fixing optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02187712A true JPH02187712A (en) | 1990-07-23 |
Family
ID=11684368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP811889A Pending JPH02187712A (en) | 1989-01-17 | 1989-01-17 | Method of adjusting and fixing optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02187712A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960141A (en) * | 1997-10-17 | 1999-09-28 | Fujitsu Limited | Optical transmission terminal device |
| JP2001124963A (en) * | 2000-11-06 | 2001-05-11 | Sumitomo Electric Ind Ltd | Light-emitting module |
| EP1151339A1 (en) * | 1999-01-11 | 2001-11-07 | Lightlogic, Inc. | Method for constructing an optoelectronic assembly |
| JP2003509709A (en) * | 1999-09-07 | 2003-03-11 | インテル・コーポレーション | Optoelectronic assembly and method of assembling the same |
| KR101015662B1 (en) * | 2005-10-24 | 2011-02-22 | 온딘 인터내셔널 리미티드. | Optical alignment system and method |
-
1989
- 1989-01-17 JP JP811889A patent/JPH02187712A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960141A (en) * | 1997-10-17 | 1999-09-28 | Fujitsu Limited | Optical transmission terminal device |
| EP1151339A1 (en) * | 1999-01-11 | 2001-11-07 | Lightlogic, Inc. | Method for constructing an optoelectronic assembly |
| EP1151339A4 (en) * | 1999-01-11 | 2003-05-02 | Lightlogic Inc | Method for constructing an optoelectronic assembly |
| JP2003509709A (en) * | 1999-09-07 | 2003-03-11 | インテル・コーポレーション | Optoelectronic assembly and method of assembling the same |
| JP2001124963A (en) * | 2000-11-06 | 2001-05-11 | Sumitomo Electric Ind Ltd | Light-emitting module |
| KR101015662B1 (en) * | 2005-10-24 | 2011-02-22 | 온딘 인터내셔널 리미티드. | Optical alignment system and method |
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